Physics 105

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  1. velocity
    • chart?chf=bg,s,00000000&cht=tx&chl=V%3Dd%2Ft&chs=132x40
    • distance travelled divided by time of travel
  2. Fundamental SI units
    • Length      Mass             Time          
    • meter (m) kilogram (kg) second (s)

    Electric Current: ampere (A)
  3. Electric Charge
    measured in coulombs, C

    1C = 1 A⋅s
  4. Kinetic Energy (KE)
    energy of motion
  5. Potential Energy (PE)
    stored energy that can be converted to kinetic energy

    ΔPEgrav=ΔKE
  6. charge
    q or Q
  7. Electric Potential

    or

    Potential
    chart?chf=bg,s,00000000&cht=tx&chl=V%20%3D%20%5Cfrac%20%7BPE_e_l_e_c%7D%7BQ%7D&chs=164x78

    • measured in volts, V
    • 1V = 1 J/C
  8. Potential Difference
    Voltage

    difference in potential between 2 points

    chart?chf=bg,s,00000000&cht=tx&chl=%5CDelta%7BV%7D%20%3D%20%5Cfrac%7BPE_e_l_e_c%7D%7BQ%7D&chs=192x78
  9. Current   (I)
    flow of charge

    chart?chf=bg,s,00000000&cht=tx&chl=I%20%3D%20%5Cfrac%20%7B%5CDelta%5C%20Q%7D%7B%5CDelta%5C%20t%7D&chs=120x76

    measured in ampere, A

    1A = 1 C/s
  10. Circuit
    closed loop that current can flow around
  11. Ohm's Law
    current is proprtional to voltage

    V = IR

    V=Voltage, I=current, R=resistance
  12. Resistance   (R)
    Measured in ohm, Ω

    1Ω = 1 V/A

    smaller the resistance, more easily current flows
  13. Resistivity (R)
    chart?chf=bg,s,00000000&cht=tx&chl=R%20%3D%20%5Cfrac%7B%5Crho%20L%7D%7BA%7D&chs=112x74

    measured in Ω⋅m

    changes with temperature
  14. chart?chf=bg,s,00000000&cht=tx&chl=p(T)%20%3D%20p_0%5B1%2B%20%5Calpha%20(T-T_0)%5D&chs=378x44
    • p(T) = resistivity at temperature T
    • p0 = resistivity at some reference temperature, T0 (usually 20 °C)
    • α is the temperature coefficient of resistivity, usually has units of (°C)-1
  15. Power
    the rate at which energy is transferred

    1W = 1 J/s
  16. Power (P)
    chart?chf=bg,s,00000000&cht=tx&chl=P%20%3D%20%5Cfrac%20%7BV%5E2%7D%7BR%7D&chs=110x72       P = IV

    P = I2R     chart?chf=bg,s,00000000&cht=tx&chl=P%20%3D%20%5Cfrac%20%7B%5CDelta%20PE_e_l_e_c%7D%7B%5CDelta%20t%7D%20%3D%20%5Cfrac%7Bq%20%5CDelta%20V%7D%7B%5CDelta%20t%7D&chs=304x76
Author:
ufvlu
ID:
313996
Card Set:
Physics 105
Updated:
2016-01-18 21:14:44
Tags:
chapter electrical charge potential energy
Folders:
physics
Description:
1.2: Physical Quantities and Units 1.3: Accuracy, Precision and Sig Figs 18.1: Electric Charge 19.1: Electric Potential Energy: Potential Difference
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